Means fob pinning sheets



May A13,1'930. H AARON 1,758,679

MEANS FOR PINNING SHEETS Filed Jan. 8, i926 2 Sheets-Sheet l May 13, 1930. D H. AARON 'l 15753579 MEANS FOR PINNING SHEETS Filed Jan. 8, 1926 2 Sheets-Sheet 2 Vs; :sa

nl is; 4 '5 El 9 Patented May i3, 193

para sa HARRY AARON, OF SCRANTON, PENNSYLVANA, ASSGNOB T THE PINZIT COMPANY, ENC., OF NEW YORK, N. Y., A CORORATON 0F NEW YORK MEANS FR PNNNG SHEETS Application tiled January 8, 19536.

In carrying out the invention, a plurality of pins, preferably pins with flat-sided heads of the type commonly known as bank pins, are arranged in superimposed relation to each other, in the form of a pile or stack and lightly coated with a ilm of cellulose or other adhesive material to hold them together in stack formation and then, by a single operation, the pin at one end of the stack is disassociated therefrom and pushed,

point first, into the sheets to be united.

The accompanying drawings illustrate a preferred embodiment of the means for carrying out the invention, as will presently appear, but various dierent modifications and alterations may be made in this embodiment without departing from the principle of the invention or the mode of operation of the elements in which such principle is carried out.

In the drawings:

Figure 1 is a vertical section, partly in side elevation of a pin inserting device showing the parts as arranged when not in use.

Figure 2 is a fragmentary section of the parts shown in Figure 1 with the operating handle partly depressed.

Figure 3 is a side elevation partly broken away, oi the device shown in Figure 1 with au the operating handle still further depressed.

Figure et is a plan view of Figure 1 and a horizontal section taken through a pin mags azine.

Figure 5 is a detail plan of the lower crimping member broken away from the main portion ot the base.

Figure 6 is a longitudinal vertical section partly in elevation with the parts in their linal or full stroke position.

Figure 7 represents two sheets of paper, pinned together, the pin point being buried or partly inserted into the top sheets.

Figure 8 is a rear end View or" the device partly in section with the parts in the position of Figure 1.

Figure 9 is a vertical 'section ot the device taken on the line IX-IX of Figure 6.

Figure 10 is a bottom plan of the moving arm and the upper crimping member partly broken out.

Serial No. 79,945.

Figure 11 is a perspective detail oi' the pivoted arm shown in Figure 10, enlarged, to show the preferred means for securing the spring plate to said arm.

Figure 12 is a vertical section of the free end of the pivoted arm shown in Figures 10 and 11 and the pin magazine attached to said arm, and associated parts,` part of said arm and the plunger appearing in side elevation. rhe rear end oi' the plunger and connecting means are indicated in dotted lines.

Figure 13 is a bottom plan, in general similar to Figure 10, enlarged, showing a pin and the end of the pinning plunger in advancedposition.

Figure 141 is a vertical section taken on the line XIV-XIV of Figure 12; and,

Figure 15 represents the pin stack.

FigurelG is a detail.

The main frame which may be taken as the base consists or" a bottoni-plate 1 and a casing 2. `The latter encloses the various working parts and forms the support for some of them; it is also shaped at its torward end to :term a paper-crimping anvil member 3 Vas later described. rThe bottom and edge of the base are covered with felt as indicated so that the use of the device on a desk top will not injure the latter, but it may be stated here that the principle of this invention may be incorporated in other than the desk-type form herein described.

The 'crimping arm t is pivoted to the casing by a cross pin sta and is normally pressed upward or away from the base plate, by a spring 5 attached at one end to the latter. The arm L is formed or provided on its free end with a crimping member 6 cooperating with the crimping member 3 oi the base so that .when the sheets to be pinned are pinched between them they will be crimped as indicated in Fig. 6, ready to have the pin inserted. The arm fi also carries the pin magazine 7 which is shaped to receive the pins and deliver them to the pinning plunger, under the iniiuence of the magazine spring 7a. A spring plate 8 is secured to the bottom of the arm i with itsfree end under the pin magazine to support the pins therein.

The pinning plunger 9 is mounted to slide in or on the arm l in line with the undermost pin of the magazine 7 and between said magazine and the supporting plate 8, so that when it is advanced it will that pin, detaching it from the others, and push it into the crimped paper. The supporting plate 8 is a fiat spring secured to the bottom ot the crimping arm d by interlocking lugs 1b and 8u as shown in detail in Fig 11 and its ton ward end is slotted and slightly upturned to guide the pin.

rilhe slideway of the plunger 9 in the arm dis formed by creasing and tianging the latter, see Fig. 9, but it may be otherwise mounted thereon as will be evident. It is reciprocated by a link or links 10 connecting its rear end to the lower arm of the operating lever or handle 11 which is o bell-crank shape and formed of sheet metal; as thus made the lower arm is formed of the two side members brought together as indicated in Fig. 9, while abovethis arm the handle is hollow and contains and conceals the handle spring 12 as well as part ot the full-throw mechanism later described. The handle is tulcrnmed on a crossrivet 13 of the casing 2 and the handle spring 12 tends to keep it in the erect position indicated in Fig. 1. For this purpose the spring bears, at one end, on the top of the cross-rivet 14 and the bottoni of this same rivet serves as the abutment stop to limit the upward movement ot the handle. See Fig. 1.

The inner arm of the hand lever 11 is provided with rollers 15 which roll on the upper curved edges ot the side walls of the crimping arm 4l, which arm is also Jformed of sheet metal bent to the shape indicated. The curvature of the edges oi' the arm includes a notch or recess 16 and a peak 17 (Fig. 2). As the handle is depressed, the rollers 15 ride up the peak 17 and thus torce the crimping arm downward, thereby `crimping the paper sheets as already described and as shown in Fig. 6. In its continued movement, the rollers travel over the arcuate portion 18 ot the edges ot the arm L1, with no eiect except to hold the arm down and the sheets crimped, while the pinning plunger is being advanced, by the operation of the links 10, to remove the undermost pin from the magazine and press it into sheets ot paper as above explained. As shown in 12 the forward tip ot the plunger is bevelled, on its top side, to facilitate the separation ot the lowermost pins from the pin stack.

The crimping member 3 is preferably formed with a supplementary cross-ridge 19 of a height slightly less than that oi: the main crimping ridge 2O and with less inclination 'from horizontal on its rear sine, thus presenting the sheet material in the line ot the pin so that when a pin is pressed through the crimp to its full extent, its point will become embedded and yconcealed in or between the layers ot material, as indicated in Fig. 7. It

will be understood that when the upper and lower crimping members are engaged with opposite sides oi the paper sheets the groove 21 in the anvil member and the groove in the upper member 6 are substantially aligned and form a guideway tor the advancing pin point, directing straight into the paper and in some measure guarding the pin against bending when it encounters abnormal resistance to penetration.

lt is important, atter a pin has been started into the sheets to be pinned, that the downward pressure on the lever 11 be continued to the end or" the stroke of the plunger in order that the pin may be completely entered. lt the hand lever should be released with the pin partly entered the eliect might be to tear the paper or leave a bent pin in the pin guide or in a position to jam the plunger or the magazine on the next stroke. In order to prei/'ent such occurrence a latch 22 is connected to the handle 11 at 23 and provided with a light spring pressing it downwards and normally against the cross pin la or some other proper abutment. When the handle isdepressed it nieves the latch downwards, and the hooks 211 on the latter pass under the inturned lugs 25 formed on the rear of the crimping arm and when the hooks are under the lugs the lower end of the latch encounters a stronger spring 26, also carried on the crimping arm, which spring exerts an upward pressure on the latch so that the hooks snap over the lugs ani thereby serve to prevent the return ot the latch as indicated in Fig. 3. This locks the handle down at this point so that it cannot` now move back to its initial position. In this position the rollers 15 are engaged with the peak 17 and the crimping members are closed. rl`he spring 26 is secured to the bottom of the crimping arm, embracing the creased part of the latter as indicated in Figs. 2, 9 and 10. It is held in place by its own elasticity and by a small indentation on its bottom which keeps it from longitudinal movement on the arm, but it can be pried oli' ii necessary. l'Vhen the handle is Jfurther depressed the latch 22 rides i'urther downwards under the lugs 25 until its side notches 2T register therewith. This lets the latch swing away from the arm, under the pressure of spring 26, and in this position, which is the full stroke position et Fig. 6, the latch and hooks will ride over the lugs when it moves upwardly and will not be obstructed by them; the handle is thus uniatched and may now be restored to its initial position. Before the end of the upstroke the latch rides oil of spring 25, and its bottom end 23 ot' reduced width drops between thc lugs under the pressure of its handle spring, thus taking its original position as indicated in Fig. 1, ready to move under the lock lugs 25 on the next down stroke, and ride back r`so on. Vhile it is preferred that the latch cooperates directly with lugs and'spring carried by the crimping arm as above described, this is not essential and it is within the invention to construct lthe latch in other ways or to apply it to or between any other part of the mechanism or to carry out the function thereof by any `suitable type of full stroke mechanism whereby the crimping members will be held closed until the pin has been fully or sufiiciently inserted, thus avoiding jamming or derangement of the device.

It will be seen that the pin magazine is merely a tubular housing held by and between the opposite inwardly folded sides of the crimping arm A; it is provided with a cap 7b which is properly held to it and the cap carries the follower spring 7a so that when the cap is taken off the follower is removed with it. The pin stacks may thus be eas- `ily dropped into the magazine. The crosssectional shape of the latter requires that the pins be inserted with their points forward and open slots in the magazine walls serve as windows to show when the magazine needs refilling. The bottom side of the pin follower is rounded so that when the pins are exhausted the pinning plunger will ride freely under it.

As shown in Fig. l5, the pins are preferably formed with fiat-topped triangular heads, but other kinds may be used.- The advantage of the fiat top is that it affords a more reliable bearing for the end of the pinning plunger as it pushes the lowermost pin off of the bottom of the pin stack. lt will be understood that .at this moment the forward end of the pin occupies, the slot in the forward upturned end of the spring finger 8 which adequately guides the pointed end. The extreme vtip of the pinning plunger is desirably provided with a Vtransverse (horizontal) groove, see Fig. 16, which receives the top cross bar of the pin, and the plunger tip is also preferably made .slightly rounded, so as to fit a corresponding concave curvature in the end of the head of the pin, in pins of this type in the said cross bar as indicated in Fig. 13. This tends to improve the security of engagement between the plunger and the pin and the firm bearing of the plunger on the triangular head thus increases the certainty that the pin will be advanced strictly endwise into the slot or groove in the crimping members and into the sheets held by the latter. The spring finger yields to the plunger as the head of the pin rides off it. Figure l5 shows the strip `of adhesive which holds the pins together, such strip being marked 30. -One such strip can be applied to both sides of the stack and to the Shanks of the pins only, but it is within the invention to unite the pins in any manner by means of adhesive. Some of the adhesive remore'securely in the material in which it is inserted. The pin stacks may be made of any desired number of pins according` tothe strength of the adhesive used.

l claim:

l. In `a device of the class described, having` coacting crimping members, a pinning plunger, an operating handle, and means for preventing opening of said members after the beginning of a pinning stroke ofthe plunger until the plunger completes its pinning stroke.

2. A device of the kind described having two-coacting crimping members one carried on the frame of the device and the other being movable relatively thereto, a pinning plunger, land an upright magazine adapted to receive loosely a stack of pins coated with adhesive, the receiving space in the magazine beingenough larger in cross section than the stack to allow it to be readily inserted and to drop freely in the magazine.

3. In adevice of the class described, the combination of a base having a crimping die member, an arm pivoted to the base to swing in a vertical plane and having a crimping die member adapted to coact with the crimping `die member of the base to crimp sheets interposed between the base and arm, means for slidably supporting a pin in line with and at an angle to the crimp in said sheets for projection therethrough when said crimp has been effected by the dies, mechanism for projecting said pin including an actuating lever, and means operatively connected with a part of said mechanism which moves during a pin projecting operation and isengageable with said arm for preventing a reverse movement of said moving part during a pin projecting operation.

4l. In a device of the class described, the combination of a base, an arm mounted on said base to swing vertically, coacting means on said -base and arm for forming a crimp in sheets interposed between them on the occurrence of such swinging movement, manually operated :means for projecting a pin through the crimp, and instrumentalities operatively related to said manually operated Vmeans and adapted to be actuated concurrently with a pin projecting operation for necessitating its completion.

5. A device of the class described having a supporting base carrying a crimping niember, a crimping arm coacting therewith, a pinning plunger mounted to move on the arm, and means for operating the crimping arm and for maintaining it in crimping position including successive arm operating and arm maintaining cams, said means being operatively connected to the pinning plunger for inserting the `pin during the arm-maintaining cam action.

.mains on the pin and .serves kto anchor it llO 6. A device of the class described having a base carrying a crimping member, a crimping arm, a pinning plunger mounted on the arm, andan operating lever tulcrumed on the base.

7. In a device of the class described, a base having a crimping member, a crimping arm pivoted on the base, a hand lever on the base for operating the arm, and a pinning plunger connected to said lever.

8. In a pinning machine, the combination with two relatively movable crimping members, of pin magazine adapted to receive and supply pins having flat-topped heads, and a pinning plunger adapted to reciprocate with reference to said magazine to insert a pin in the crimped material and having its pin engaging end slightly convex transversely of the plunger to tit the corresponding concave ends or" the heads of the pins to conform thereto thereby assisting in insuring correct feed of the pins.

9. In a pinning machine, the combination with two relatively movable crimping members, off a pin magazine adapted to receive a stack oir' pins, said pins having iiat-topped heads, each head having a portion concave transversely in the plane of the pin, said pins being held in stack formation with said concave portions in registry by an adhesive, and a pinning plunger adapted to reciprocate with reference to said magazine to insert said pins successively in the crimped material and having its pin engaging end correspondingly convex in the plane of the plunger to lit the concave end portions of the pin heads to conform thereto and assist in insuring cor rect feed of the pins.

10. In a device of the class described, the combination of a frame having a crimping member, a pivoted arm carrying a coacting crimping member, a pinning plunger on said arm, and an operating member having a cam engagement with the arm and a linlr connection with the plunger.

11. In a device oit the class described, the combination of a base havinga crimping member, a pivoted arm carrying a coacting crimping member, said arm being formed of sheet metal bent to shape, and a pinning plunger sliding within said arm.

12. In a device ot the class described, two coacting crimping` members one of which is carried by a pivoted arm, a pin magazine on said arm, and a spring linger having its free end serving to support the pins in said maga- Zine.

13. In a device ot the class described, two coaoting crimping members, one of which is carried by a pivoted arm, a magazine on said arm, a spring finger serving to support the pins in said magazine, a pinning plunger, and means for advancing the plunger between said spring ringer and the pins in the magazine.

lr. In a device of the class described, crimping members, a magazine, a spring iinger to support the pins therein, and a pinning plunger movable between said linger and the `pins in the magazine, the forward end oi said finger being shaped to guide the pin removed by said plunger.

15. In a device of the class described, a crimping arm, a pin magazine, a nger having a pin-guiding formation adapted to support the pins in the magazine, and a pinning plunger having a bevelled tip movable between said linger and magazine.

16. In a device oi' the class described, a crimping arm carrying a pin magazine at its t'orward end, and an operating lever engaging said arm in rear or" the magazine.

17. In a device of the class described the combination or coacting crimping members, a pinning plunger, a hand lever, a latch for retaining the crimping members in closed position, and means whereby a full stroke of the plunger releases the latch.

18. In a device or' the kind described, the combination of a base or iframe carrying a crimping member, a movable crimping member, a pinning plunger, an operating member for said movable member and plunger, and a full-throw latch device attached to said operating member.

19. In a device of the kind described, the combination of a base or :trame carrying a crimping member, a crimping arm, a pinning plunger, an operating member for said arm and plunger, and a full-throw latch attached to said operating member and coacting with said arm.

20. In a machine for pinning papers together, comprising in part a base formed with a die member, a frame formed with a die member, said trame being mounted on the base in a manner to bring its die member against the aforesaid die member to thereby torm a crimp in paper placed between said die members, said die members being constructed and co-acting in a manner to form and hold the crimp so that it may be pierced by a pin, a slideway in the frame adapted to slidably support a pin having an eye shaped head in a manner to render the pin projectable through the crimp of said paper when the pin is slid, manual pin projecaing means for sliding said pin to project it through the crimp of said paper, and means tor progressively feeding pins into said slideway, said means including means for holding the heads ot a column or superposed pins in vertical alinement with the first named pin, and means tor guiding the shanks of sai-:l column oi pins against lateral disarrangement.

In testimony whereof, I have signed this specification.

HARRY AARON. 

